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Cheap flights from Key West to London Heathrow Airport from £526

This is the cheapest retur flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 16/9. Fares are subject to change and may not be available on all flights or dates of travel.
EYW — LHR
20 Apr — 27 Apr1
1 adult

Cheap flight deals from Key West to Heathrow

Discover tips and strategies to find the most affordable flight options for your journey from Key West (EYW) to Heathrow (LHR). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated 15 April 2025.

Round-trip from

£526

Popular in

October

Cheapest in

September

Average price

£604
British Airways
  • British Airways
  • 16/9-23/9
  • 3 total stops
  • 41h 10m total
  • Key West to London
Search Deals
Highest demand for flights based on searches. 2% potential increase in price (£14 potential increase over avg. return price).
Search Deals
Cheapest flight prices on average. 5% potential price decrease (£31 potential savings vs. average return price).
Search Deals
Average for round-trip flights in April 2025
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Find flight deals from Key West to Heathrow

Cheapest flights from Key West to Heathrow
Explore the most affordable flight options available from Key West to Heathrow. Find the lowest fares from popular airlines and budget airlines, with prices last updated on 15 April 2025.

Fri 2/515:56EYW - LHR
1 stop13h 39mBritish Airways
Fri 9/506:10LHR - EYW
2 stops17h 39mBritish Airways
Deal found 15/4£559
Fri 2/515:00EYW - LHR
2 stops16h 35mDelta
Fri 9/506:30LHR - EYW
2 stops18h 37mDelta
Deal found 15/4£567
Fri 22/815:05EYW - LHR
2 stops14h 35mUnited Airlines
Sat 30/812:40LHR - EYW
2 stops30h 20mUnited Airlines
Deal found 15/4£598
Fri 22/811:45EYW - LHR
1 stop14h 00mAir France
Sat 30/806:15LHR - EYW
2 stops18h 31mAir France
Deal found 15/4£620
Fri 22/814:35EYW - LHR
1 stop11h 10mKLM
Sat 30/809:20LHR - EYW
1 stop12h 55mKLM
Deal found 15/4£626
Fri 22/810:33EYW - LHR
2 stops14h 57mMultiple Airlines
Sat 30/814:05LHR - EYW
3 stops31h 56mMultiple Airlines
Deal found 15/4£1,676

Cheapflights Fare Finder

Customise your flight search to find flights from Key West to Heathrow that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 April 2025.
Use the filters below to find and compare flights from Key West to London Heathrow Airport that are best for you.

Fly from

Key West

Fly to

Heathrow

Route

Depart

Return

Price

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 16/9

16:01-09:25

1 stop12h 24m

London Heathrow

Tue 23/9

18:45-18:31

2 stops28h 46m

£526

Key WestLondon

EYW - LHR

EYWLHR

Key West

Tue 16/9

11:45-06:45

1 stop14h 00m

London Heathrow

Tue 23/9

20:55-17:12

2 stops25h 17m

£531

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 2/5

07:00-06:25

2 stops18h 25m

London Heathrow

Fri 9/5

06:30-20:07

2 stops18h 37m

£567

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 22/8

15:05-10:40

2 stops14h 35m

London Heathrow

Sat 30/8

12:40-14:00

2 stops30h 20m

£598

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 22/8

11:45-06:45

1 stop14h 00m

London Heathrow

Sat 30/8

06:15-19:46

2 stops18h 31m

£620

Key WestLondon

EYW - LHR

EYWLHR

Key West

Fri 22/8

10:33-06:30

2 stops14h 57m

London Heathrow

Sat 30/8

14:05-17:01

3 stops31h 56m

£1,676

Key WestLondon

EYW - LHR

EYWLHR

Key West

Mon 5/5

14:18-09:20

1 stop14h 02m

£878

Flights are sorted by cheapest return flights first.

Deals found on 14/4

Best time to book a flight from Key West to Heathrow

Have a flexible travel schedule? Discover the best time to fly to Heathrow from Key West with our price prediction graph.
Estimated return price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Key West to London Heathrow Airport

Rainfall in Heathrow by month

Plan your trip to Heathrow by taking into account the average rainfall totals by month.

In terms of precipitation, rainfall in London Heathrow Airport ranges from 40.0 - 70.0 inches per month. January is typically the wettest month, when rainfall can reach 70.0 mm. July is typically the driest time to visit London Heathrow Airport when rainfall is around 40.0 mm.

Temperature in Heathrow by month

Plan your trip to Heathrow by taking into account the average temperature totals by month.

If weather is an important factor for your trip to London Heathrow Airport, use this chart to help with planning. For those seeking warmer temperatures, July is the ideal time of year to visit, when temperatures reach an average of 17.0 C. Travellers hoping to avoid the cold should look outside of January, when temperatures are typically at their lowest (around 4.0 C).

Reviews of airlines servicing Heathrow

Get insights into the airlines that provide service to Heathrow. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Heathrow. Reviews last updated 15 April 2025.
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Delta
8.0
Very Good
7,918 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
KLM
7.8
Good
1,323 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
Air France
7.5
Good
1,435 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
United Airlines
7.4
Good
8,658 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.
British Airways
6.6
Okay
6,760 reviews
Delta
8.0
Very Good
7,918 reviews
Check prices

Crew

8.5

Boarding

8.2

Comfort

7.9

Entertainment

7.9

Overall

8.0

Food

7.3

Reviews

1 / 20
10.0
Excellent

Aaron,Oct 2024

LAX - LHR

This was a flight operated by Virgin Atlantic in their Upper Class cabin. Overall, an outstanding experience.

Related info for your journey

Find useful and relevant information for your journey from Key West to Heathrow. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

  • What airport do you fly from for flights from Key West to London Heathrow?

    Key West (EYW), located 2.6 mi from the city center, is the airport you fly out of when you book flights from Key West to London Heathrow. 1 airline have flights from Key West to London Heathrow on a regular basis. Booking flights from Key West to London Heathrow should not be difficult; the airport handles an average of 0 outbound flights to London Heathrow per day.

  • What are the cheapest airlines flying from Key West to London Heathrow Airport round-trip?

    Our cheapest airline available from Key West to London Heathrow Airport is British Airways. Our recent data shows that you can find tickets from as low as £526 on this airline. Additional options worth looking into are KLM and Delta, starting at £531 and £567 round-trip. British Airways is 37% cheaper than the average price of flights available within the next 90 days to this destination.

  • Can I find deals for flights from Key West to Heathrow that include hotel bookings?

    Yes. In addition to deals on Key West to Heathrow flights, Cheapflights offers holiday packages that include both flights and hotel.

  • How can I find direct flights from Key West to Heathrow?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Key West to Heathrow.

  • Can I find deals for business class flights from Key West to Heathrow?

    Yes. Cheapflights offers flight deals from Key West to Heathrow by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Key West to London Heathrow Airport?

    Currently, January is the cheapest month in which you can book a flight from Key West to London Heathrow Airport (average of £112). Flying from Key West to London Heathrow Airport in August is currently the most expensive (average of £164). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

See more FAQs

Travelling to a place near Key West?

Book flights to Key West if you plan to visit one of these locations
Hounslow
Deal
Milton Keynes
Gatwick
Luton
Slough
Croydon
Eastbourne
Wembley
Northampton
Hayes
Crawley
Southend-on-Sea
Maidstone
Swindon
Ipswich
Southall
Ilford
Winchester
Folkestone

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Alternative routes for Key West to Heathrow

See prices for flight routes from nearby airports that may be better suited for you.
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Top airline flying from Key West to Heathrow

Discover the top airline that operate flights from Key West to Heathrow. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 858,174 searches. Data last updated 15 April 2025.
AirlineCheapestAverageFlexibilityOn-time
Virgin AtlanticCheapest£602Average£1,101FlexibilityNo cancel feeOn-time72%
Search Virgin Atlantic flights

Fly with Cheapflights

Find the best flight deals on Cheapflights, where travellers can enjoy low prices and a wide availability of flights to their desired destinations.

How does Cheapflights help users find flights from Key West to Heathrow?

Deals for Key West to Heathrow flights are sourced from 900+ travel sites when you use Cheapflights. When all flight results come back, Cheapflights lets you sort and filter flights using different criteria to choose better, like price, airport, cabin class, and plenty of other options.

Why should you use Cheapflights to find cheap flight tickets from Key West to Heathrow?

Cheapflights helps you find that perfect flight to Heathrow from Key West by searching from hundreds of airlines and agencies you know and love. We are also free to use, in case you were wondering!

Can Cheapflights find flights from Key West to Heathrow with no change fees?

Need flexible booking options for your flight to Heathrow from Key West? Don’t worry, Cheapflights have you covered. Use our search filter to only show flights with no change fees.

Can Cheapflights notify me if prices for flights from Key West to Heathrow become cheaper?

Yes, and it’s super simple to set up. Click the bell icon next to the flight deals above and provide a valid email address to enable Price Alerts. That’s it!

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